We're dividing 21531410 by 599 
We're looking to find how many times 599 goes into 21531410.

Step 1:
599 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 599

Step 2:
21 divided by 599 is 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 599

Moving on to step 3:
The number 599 fits into 215 0 times, leaving a remainder of 215.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 215, we get 215.
Fetch the next digit (3) from the dividend, attach it to 215 and continue: 2153 / 599

Step 4:
2153 divided by 599 is 3 with a remainder of 356.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 1797 from 2153 leaves us with 356.
Take the next digit (1) from the dividend and append it to 356, then repeat: 3561 / 599

Advancing to step 5:
3561 divided by 599 is 5 with a remainder of 566.
Write down 5 as next digit of the result. 
Result so far: 35.0
Subtracting 2995 from 3561 leaves us with 566.
Bring next digit (4) of the dividend behind the 566 and repeat the process: 5664 / 599

Let's proceed to step 6:
599 can be fit into 5664 9 times, resulting in a remainder of 273.
The number 9 becomes the next digit in our result. 
Result so far: 359.0
If we subtract 5391 from 5664, we get 273.
Append the next digit (1) from the dividend to 273 and continue with: 2731 / 599

Step 7:
The number 599 fits into 2731 4 times, leaving a remainder of 335.
Record the quotient 4 as the next digit in the result. 
Result so far: 3594.0
Deduct 2396 from 2731 and we're left with 335.
Bring next digit (0) of the dividend behind the 335 and repeat the process: 3350 / 599

Moving on to step 8:
599 can be fit into 3350 5 times, resulting in a remainder of 355.
The next digit of our result is 5. 
Result so far: 35945.0
Deduct 2995 from 3350 and we're left with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Let's proceed to step 9:
599 can be fit into 3550 5 times, resulting in a remainder of 555.
Record the quotient 5 as the next digit in the result. 
Result so far: 35945.5
If we subtract 2995 from 3550, we get 555.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5550, and continue the process.

Going ahead to step 10:
The number 599 fits into 5550 9 times, leaving a remainder of 159.
Use 9 as the next digit of our solution. 
Result so far: 35945.59
The remainder is 159 after subtracting 5391 from 5550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

On to step 11:
1590 divided by 599 is 2 with a remainder of 392.
Use 2 as the next digit of our solution. 
Result so far: 35945.592
Deduct 1198 from 1590 and we're left with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Moving on to step 12:
3920 divided by 599 is 6 with a remainder of 326.
Write down 6 as next digit of the result. 
Result so far: 35945.5926
Subtract 3594 from 3920 to get 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Step 13:
599 can be fit into 3260 5 times, resulting in a remainder of 265.
Write down 5 as next digit of the result. 
Result so far: 35945.59265
If we take 2995 away from 3260, we end up with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

On to step 14:
When dividing 2650 by 599, we get 4 with a remainder of 254.
Use 4 as the next digit of our solution. 
Result so far: 35945.592654
If we subtract 2396 from 2650, we get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Moving on to step 15:
The number 599 fits into 2540 4 times, leaving a remainder of 144.
The number 4 becomes the next digit in our result. 
Result so far: 35945.5926544
Subtracting 2396 from 2540 leaves us with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

The final outcome is 35945.5926544, with a leftover of 1.44e-06.